Joseph j



(No Model.)

J. J. LUTHER.

REVERSIBLE WATERPILTER.

Patented Dec. 6, 1882;

,EEEEEE h. Washington. a. Q

UNITED S ATES PATENT OFFICE.

JOSEPH J. LUTHER, OF EAST PROVIDENCE, RHODE ISLAND.

REVERSIBLE WATER-FILTER.

SPECIFICATION forming part of Letters Patent No. 268,420, dated December 5, 1882,

Application filed March 13, 1882. (No model.)

ber. Another object is to effect a peculiar cir culation or movement of water within the filtering-chamber, and among or through the filtering matter; and another object is to economically provide for the proper union of the two sections of which my filtering-chamber is composed.

After fullydescrihing a filter embodying my improvements, the features deemed novel will be designated in the several claims hereunto annexed.

Referring to the drawings, Figure 1 represents one of my filters as applied to a faucet.

Fig. 2 is a view of the filtering-chamber detached and in central vertical section. Fig. 3 is a perspective view of the locking device detached. I

Broadly considered, the pin-and-slot connections described are somewhat similar to the common bayonet-joint, and considered as means for merely connecting two parts or pieces of metal together, my use thereof is not unlike their prior use with bayonets, and

even in water-filtersa's, for instance, for uniting a baiLpiece, and for connecting a perforated diaphragm to the main shell or filteringvessel; but thefiltering-chamberA is globular in form, and is constructed in two sections, which are interlocked together by meansof two inclined cam-slots, a, in the rim of one section,

sheet metal solight or thin that screw-threads could not be relied upon for uniting them. Lugs or scores will generally be provided on the outer surface of the section which has the pins, so that a suitable wrench may be applied for locking and unlocking the sections.

The filtering-chamber has coincident induction and eduction apertures, each of which, as heretofore, is guarded internally by a gauzestrainer, c, and the space between these strain ers as heretofore is divided into two compartments by a diaphragm, d, which is novel, in that on each side at its center it is provided with a cup or saucer shaped disk, 6. These concave disks 6 have their convex surfaces next to the diaphragm, a single fastening-rivet passing centrally through both disks and the diaphragm. The cup-shaped disks opposite whichever aperture is in use for induction cause the main portion of the incoming water to be effectually distributed throughout the mass of filtering matter contained in the same compartment. It is obvious that this cupshaped feature may be provided for in cast metal diaphragms, if such be desirable on the score of economy.

The filtering-chamber is, as heretofore, provided with trunnionsf, which are cast or formed integrally with one section of the chamber, although they may be separately formed and inserted, if desired, as will be the casewheu the chamber-sections are composed of sheet metal and struck up in dies. For obtaining a water-tight connection with the filtering.

chamber adjacent to its apertures, the exterior surfaces thereof around said apertures are finished truly convex by grinding.

For securing the filtering-chamber to a threaded pipe or faucet, I employa bow-shaped supporting-frame, B, having a neck internally screw-threaded, and at the lower portion of said neck there is an annular recess containing a packing with which the surface of the filter-chamber around either of its apertures is made to forcibly engage in a novel manner.

. One of the chamber-trunnions occupies a hear ing in one side of the bow-frame; but the opposite trunnion occupies a bearing in the rotative hub of a locking wrench or key, g. The

said hub has its bearings in one side of the bow-frame, and it is secured therein by means of a peripheral slot in the hub, occupied by the inner end of a screw, h, tapped into a hole in the edge of the bowfrarne. This trunnionbearin g is located eccentrically to the axis of said hub, and therefore when the hub is rotated in one direction the filter-chamber is swung upward into close packing contact with the coincident packingin the frame, and when said hub is rotated in the opposite direction the chamber is sufficiently tilted downward to freely permit it to be rotated by hand on its trunnions, and thus permit its reversal with relation to the bow-frame and faucet.

In order that the apertures of the filter" chamber may accurately register with the interior of the neck of the bow-frame, a stop of any kind may be employedas, for instance, a pin or stud projecting from the filter-chamber adjacent to the trunnion which has the fixed bearing, and arranged to engage first with one edge of the bow-frame and then with its opposite edge when the opposite aperture of the filter-chamber is turned upwardly.

A filter embodying the several features of my invention is very cheaply constructed, and when its two compartments are properly filled with any suitable filtering matter it can herelied upon for good results. The reversing of the filtering-chamber is conveniently accomplished, and a water-tight joint at the neck of the bow-frame is readily secured by the mere turning of the locking-wrench, and the working parts, always occupying, as they do, fixed relations with reference to each other, are not liable to injury when operated by unskilled or careless persons.

Although I prefer that the locking-wrench be provided with arms, so that it may be conveniently grasped by the fingers, I do not limit myself thereto, for said arms may, if desired,

be. dispensed with and a slotted or a square end hub employed capable of being rotated by means of a separate screw-driver or wrench; nor do I limit myself to the use of a single locking-wrench, for I am w ll aware that both trunnions may be eccentrically mounted, in which case the two locking-wrenches may be turned simultaneously, or either may be alone relied upon,as when but one is used. While I prefer the trunnions as shown, I do not limit myselfthereto, because the shell ofthe chamber may be axially drilled to loosely receive studs respectively projecting from the inner surface of the bow-frame at one end thereof, and like a crank-pin from the inner face of the locking-wrench hub. I Having thus described my invention, I claim as new and desire to secure by Letters Paten t- 1. Thec'ornbination, substantially as hereinbefore described, of a supportingframe, a pivoted filtering-chamber, and a rotative locking-wrench, which eccentrically supports one side of the chamber and by its rotation moves said chamber against and away from the center of said frame.

2. The combination ofa reversible filter-case having central induction and eductionapertures, gauze-strainers opposite each aperture, and a perforated diaphragm provided on each side, at its center, with a concave disk surrounded with filtering matter, substantially as described.

3. A reversible globular filter-case composed of two interlocking sections respectively provided with pins and inclined slots, which serve to unite said sections and provide for a water-tightjoint between them, substantially as described.

JOSEPH J. LUTHER.

Witnesses:

JOHN (J. PURKIS, GILMAN E. J orr. 

